#391037 (C++14) No.910 素数部分列

• 問題: No.910 素数部分列
• ユーザー: Jumbo_kpr
• 提出日時: 2019-10-18 22:03:17
• 言語: C++14 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 6 ms / 1,000 ms
• コード長: 2,275 bytes
• コンパイル時間: 1,154 ms
• コンパイル使用メモリ: 110,632 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-06-25 21:27:34
• 合計ジャッジ時間: 2,966 ms
• ジャッジサーバーID （参考情報）: judge2 / judge1

ファイルパターン	結果
sample	AC * 3
other	AC * 50

ソースコード

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
//#pragma GCC optimize ("-O3","unroll-loops")
#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<queue>
#include<map>
#include<math.h>
#include<iomanip>
#include<set>
#include<numeric>
#include<cstring>
#include<cstdio>
#include<functional>
#include<bitset>
#include<limits.h>
#include<cassert>
#include<iterator>
#include<complex>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<time.h>
#include <random>
using namespace std;
#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define REVERSE(v,n) reverse(v,v+n);
#define VREVERSE(v) reverse(v.begin(), v.end());
#define ll long long
#define pb(a) push_back(a)
#define print(x) cout<<x<<'\n';
#define pe(x) cout<<x<<" ";
#define lb(v,n) lower_bound(v.begin(), v.end(), n);
#define ub(v,n) upper_bound(v.begin(), v.end(), n);
#define int long long
#define all(x) (x).begin(), (x).end()
#define print_space(v) REP(i,v.size())cout << v[i] << ((i == v.size() - 1) ? "\n" : " ");
//#define double long double
template<typename T1, typename T2> inline void chmin(T1 & a, T2 b) { if (a > b) a = b; }
template<typename T1, typename T2> inline void chmax(T1& a, T2 b) { if (a < b) a = b; }
typedef pair<int, int>P;
const int MOD = 1e9 + 7;
const int MAX = 200060;
const double pi = acos(-1);
const ll INF = 1e18;
bool used[200020];
void solve() {
    ll ans = 0;
    string S;
    int N; cin >> N >> S;
    int l = 0, r = 1;
    while (l < N&&r < N) {
        while (S[l] != '1') {
            l++;
            if (l >= N)break;
        }
        if(r<=l)r = l + 1;
        if (r >= N)break;
        while (S[r] != '9') {
            r++;
            if (r >= N)break;
        }
        if (r >= N)break;
        used[l] = true;
        used[r] = true;
        if (r < N)ans++;
        l++, r++;
    }
    string T;
    int nine = 0, one = 0;
    REP(i, N) {
        if (used[i])continue;
        if (S[i] == '3' || S[i] == '5' || S[i] == '7') {
            ans++;
        }
        else if (S[i] == '1') {
            if (nine >= 2) {
                nine -= 2;
                ans++;
            }
            else one++;
        }
        else if (S[i] == '9') {
            nine++;
        }
    }
    ans += one / 2;
    print(ans);
}
signed main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX